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A. G. EVANS. RAILWAY SIGNALING APPARATUS.

N0. 531,720.- r Patented Jan. 1, 1895.

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(No Model.) '2 Sheets-Sheet 2.

A. G. EVANS RAILWAY SIGNALING APPARATUS.

No. 531,720. Patented Janfl, 1895.

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UNITED STATES ARTHUR GEORGE EVANS,

RAILWAY SIGNAL OF LONDON, ENGLAND.

ING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 531,720, dated January1, 1 895.

Application filed June 13, 1894- Serial No. 514,460. (lilo model.)Patented in England April 27, 1894, No. 8,382.

To ail whom, it 172/091; concern:

Be it known that I, ARTHUR GEORGE EVANS, a subject of the Queen of GreatBritain and Ireland, residing at No. 116 Palace Chambers, Bridge Street,lVestminster, London, in the county of Middlesex, England, have inventedcertain new and useful Improvements in Coacting Apparatus for RailwaySignaling Purposes, (for which I have ob tained a patent in GreatBritain, No. 8,382, bearing date April 27, 189%,) of which the followingis a specification.

My invention relates to certain improvements in the construction andarrangement of signaling apparatus for the purpose of controlling anyone or more signals by any one or more other signals, or of controllingany one or more signals from any two or more signal cabins or points ofconcentration.

It further relates, and which is the most common use of co-actingapparatus, to controlling any one signal, say a distant signal, by anyone or more arms and from any one or more signal cabin or cabins.

My invention can be carried out by adapting the ordinary balance leverco-acting plate which has been previously used for arms that were notcounter-balan ced to Work arms, disks and spectacles that are weightedor counterbalanced.

Brieiiy, the object of my invention is to pro duoe an apparatus whichwill depart as little as possible from the standard forms of balanceplates heretofore fixed upon signal posts so that while conforming tothe regulations of counter-balanced arms, disks or spectacles, theywould yet overcome certain defects now common in apparatus applied forthe purposes of controlling signals. I also gain the advantage that thelast lever which is worked for the purpose of lowering the controlledsignal is not dependent on the wire of the first lever that is worked,thatis to say, it does not tend to undo the operation performed by thefirst lever worked.

My apparatus also, as is usual with all coacting apparatus, providesthat in the event of a fracture of any of the connections the controlled signal flies to the danger attitude. Also either of thecounter-balance levers on being returned to the normal attitude alsorehereunto annexed, in which similar letters refor to like parts in theseveral figures.

Figure 1 represents a plan of my apparatus. Fig. 2 represents a frontview of my apparatus with one of the balance levers in its workingposition. Fig. 3 represents a side view. Fig. 4B is a front View of asignal post showing the arrangement of and the connections from theapparatus to the arms. Fig. 5 is a diagram showing the connections fromthe cabins X and Z to the signal arms.

a is the main casting or carriage in which the balance lovers themselvesare supported.

I) is the fulcrum or spindle on which the balance levers work.

0 is the balance lever next the signal post operated by the near cabinX. This lever opcrates the stop signal w through its upright rod 0.

d is the intermediate lever directly connected by the upright rod d tothe distant arm "1:.

e is the outside balance lever operated from the distant lever in thefar cabin Z.

f is a friction roller bolted to the lever c.

g is a friction roller bolted to the lever e.

71. is a clip bolted to the intermediate lever d with a downwardprojection h terminating in a cotter and nut. The projection 72. forms asupport for a cradle or rocking pieceja nut preventing the said cradlepiece 3' from falling. Onesidej is adjacent to the rollerf and the otherside j is adjacent to the roller 9. The cradle piece j is free to movesidewise. The cross pieces j j act as guides for the eradle, theprojection h passing between them and maintaining j in its position.

The action of my invention is as folloxi sr- The intermediate lever dwhich directly operates the distant arm n can only be moved to operatethe said arm by the joint action of the stop signal 10 through its leverc and the distant signalman in the cabin Z operating the lever e. If theleverc operating the stop signal is Worked first, in the downward actionthe roller f comes in contact with the side piece j of the cradle j andtilts it sidewise moving the other end piece 9' into direct connectionwith the roller g attached to the balance lever e, the roller thentraveling down the curved edge of j. By this action the stop signal w isdeflected to the safety attitude. When now the Signalman in the cabin Zto which the distant signal applies operates the balance lever e, theroller f being in direct connection with the side piece 3' moves thecradle j downward thereby also moving the middle or intermediate lever ddownward. Also through j acting on the nut attached to the projection hof the piece it bolted to the intermediate lever d the action of dmoving downward deflects the distant signal '0 to the safety attitude.If either of the levers e or c istreplaced to the normal position thesaid action frees the cradle j and allows the intermediate lever (I alsoto assume the normal attitude the distant signal arm 1) thereby beingplaced to danger, by the movement of either one or other of the outsidelevers c or 6 being replaced normal. Therefore, no matter what theconditions may be in the order of action of the two signelmen X and Z myapparatus compels their joint action, as hereinbefore described, beforethe distant or controlled signal is given all clear or moved to thesafety attitude. On the other hand either one of the signalxnen may setthe distaut or controlled signal to the danger attitude independent ofthe other.

The apparatus as hereinbefore described is a single co-acting apparatus,butI would have it distinctly understood that I have only described thissaid single co-acting apparatus as a simple example as applied to one ofits uses, for it is obvious that a signal may be controlled from anynumber of signal cabins and again that any number of signals may jointlycontrol the action of any one or more other signals; further myinvention is applicable to effecting the joint control of any one ormore signals from any two or more signal cabins and effecting the jointcontrol of any one or more signals by any one or more other signals.

Having fully described my invention, what I claim, and desire to secureby Letters Patent, is-

In co-acting apparatus for railway signaling purposes, the frictionrollers, such as f and g, arranged upon the counter-balance levers, incombination with a cradle or rocking piece such as j suspended from thelever of the controlled signal, the whole operating substantially in themanner, for the purposes herein described, and as illustrated in theaccompanying drawings.

ARTHUR GEORGE EVANS.

Witnesses:

CHAS. Roonn, HARRY PETER VENN.

